Almost all of them have European surnames, but only ~20% of them have a European ancestor. If you are white, chances are good one of your ancestors came from France, or used a French surname to fool the authorities.
1 AC, or alternating current means the electrical current is alternating directions in a repetitive pattern.  AC is created by generators in power plants, and other sources. This AC current is delivered to our homes and businesses by the power lines we see everywhere.
Quick Answer. When talking about electrical current, AC stands for alternating current and DC stands for direct current.. Alternating current is the type of current that comes from a power plant and outlet, in which the current changes directions rapidly.